clock glitch failed timing check

Status
Not open for further replies.

tjhopedream

Newbie level 2
Joined
May 8, 2008
Messages
2
Helped
0
Reputation
2
Reaction score
0
Trophy points
1,281
Activity points
1,294
Hi,
When switching clock domain, there is a clock glitch that propragate the clock tree in my design. Surely we can avoid such glitch by modifying the clock mux structure. But if such glitch actually happens and could not pass the timing check in simualtion($width), what effect does it cause on the silicon? Does metastability exist on the Q output of DFF in this case if the the Data input port of DFF hold stable?
 

Yes. metastability error exists for sure. Also it may lead to delay fault model.

- - - Updated - - -

Change the respective verilog statement(s) so that the glitch can be prevented.
 

Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…